TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
13. MAIN FRAME DOES NOT LOAD IN MANUAL MODE (MODEL A ONLY)
(continued).
CONTINUITY TEST
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply
9-PIN LINKING
with this caution may result in
HARNESS
damage to test equipment or elec-
CONNECTOR (J5)
trical system.
(1) Disconnect cab control box
connector (P2) from cab control box.
(2) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an
open circuit.
(3) Connect multimeter between (9-pin)
linking harness connector (J5),
position F, and cab control box
connector (J2), position H. Check
multimeter for continuity.
CAB CONTROL
NOTE
BOXCONNECTOR
(J2)
Any reading besides infinity indicates
a grounded wire.
CAB CONTROL
BOXCONNECTOR
(4) Remove multimeter lead from one
(P2)
end of wire and connect to chassis
ground.
4-4-265
Change 1
264.1
